package com.hh.bss.auth.controller;


import java.awt.image.BufferedImage;
import java.io.IOException;

import javax.imageio.ImageIO;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.portlet.ModelAndView;

import com.google.code.kaptcha.Constants;
import com.google.code.kaptcha.Producer;

@Controller
//@RequestMapping("/")
public class CaptchaImageCreateController {
	private Producer captchaProducer = null;

	@Autowired
	public void setCaptchaProducer(Producer captchaProducer) {
		this.captchaProducer = captchaProducer;
	}
	
	 @RequestMapping("/captcha-image")
	public ModelAndView hanldeRequest(HttpServletRequest request,HttpServletResponse response) throws IOException{
		 response.setDateHeader("Expires", 0);
		 response.setHeader("Cache-Control", "no-store,no-cache,must-revalidate");
		 response.addHeader("Cache-Control", "post-check=0, pre-check=0");
		 response.setHeader("Pragma","no-cache");
		 response.setContentType("image/jpeg");
		 String capText =captchaProducer.createText();
		 request.getSession().setAttribute(Constants.KAPTCHA_SESSION_KEY, capText);
		 BufferedImage bi = captchaProducer.createImage(capText);
		 ServletOutputStream out = response.getOutputStream();
		 ImageIO.write(bi, "jpg", out);
		 try{
			 out.flush();
		 }finally{
			 out.close();
		 }
		return null;   
	}
	
	

}
